Combined scraping and conveying means for centrifugal machines.



B. D. OPPAGE. COMBINED SGRAPING AND CONVEYING MEANS FOR CENTRIFUGAL MACHINES.

APPLICATION FILED SEPT.16, 1911. 1,030,974. Patented July 2, 1912.

4 SHEETSv-SHEET l.

51m-vento@ B. D. GOPPAGE. COMBINED SGRAPING AND CONVEYING MEANS FOR GENTRIFUGAL MACHINES.

APPLICATION FILED SEPT. 16, 1911.

Patented Ju1y2, 1912.

4 SHEETS-SHEET 2.

B. D. GOPPAGB.

COMBINED SCRAPING AND CONVEYING MEANS FOR OEN'IRIFUGAL MAOHINES. APPLICATION FILED sBPT.1e, 1911.

i ,O30,974 Patented July 2, 1912.

Num n( www B. D. GOPPAGE. COMBINED SCRAPING AND CONVEYING MEANS POR .CENTRFUGAL MACHINES.

A AEPLIGATION FILED SEP'lfl, 1911. 1,030,974. Patented July 2, 1912.

4 SHBETS-SHEBT 4.

L 'strategies rarnnr onirica.

BEIJMIN DENVER COPPAGE, 0F WILMINGTON, DELAWARE.

COMBINED SCRPING ANI? CONVEYING MEANS -FOIL CENTRIFUGAL MACHINES. I

Application filed' September 16, 19.11. Serial No. 649,605.

To all whom 'it may comzem:

Be it lmovn that l', BENJAMIN BENVER Correos, of lVilmington, Delaware, have invented a new and useful improvement in Combined Scraping and Conveying Means Afor Centrifugal Machines, which invention is fully setforth in the following specification. i

This invention has been designed with particular reference to centrifugal machines of the type illustrated in U. S. Letters-Pabent to C.' S. Lee, No. 882,256, dated March 17th, 1908, wherein perforated or foramie natedcylinder, screen or drum, designated the rotorf7 proximately one thousand revolutions per ininute-on an approximately horizontal axls, and has within it relatively fixed or non-rotatable means acting in conjunction with the rotation of the rotor for conveying the material through thel latter at the de` lsireel speed of' travel. A fixed spiral conveyer blade with a slight clearance between its peripheral edge and the inner surface of t ,the rotor works very satisfactorily with materials such as sand, for the thin covering of sand which ther clearance permits to be formed on the interior surface of the rotor allows water to drain therethrough and to be dischar ed through the perforations of lthe rotor y the centrifugal action. Such thin covering of sand also affords va frictional Contact with and grip upon the main body of theniaterial in the rotor, causing vthe same to be whirled about with the rotor, and is in this respect advantageous. But in acting upon materials, such for example as coal, lfor drying the same preparatory to colring, which 'coal contains small portions of clay7 or coal dust, or both, thereis a tendency to formv about the interior surface of the rotor a tightly compacted covering iinpervious to water, and Which therefore in'- trferes with the expulsion of water therethrough and through the perforations of the rotor by centrifugal force. Therefore, the object `of my present invention is to provide, especially for usewith materials which tend to form such an impervious coating or cov- Specication of Letters Patent.

is rotated at high speed-ap4 Patented July 2,1912.

ering, means for both scraping such coverf Fig. 2 is a transverse section on line Q-Q of Fig. l; Figs- B and 4l. are detail views of parts shown in Figs. l and 2; Figz is a longitudinal sectional view through a rotor equipped with another form of combined conveyor and Scraper means in accordance with my invention; Fig. 6 is a transverse sectional view of Fig. 5; and Figs. and 8 are detail views of parts shown in Figs. 5 and 6.

Referring first to Figs. l to inclusive, l0 is a perforated or foramiuated screen, cylinder or drum adapted to rotate, in bearings about its middle, on an approximately horizontal axis. In the particular construe tion of machine illustrated, these bearings consist of three distant about the rotor7 only one pair being shown in Fig. l. 1l is a fixed core extending longitudinally through the rotor and.

supported at its ends respectively by a hopper l2 and. discharge hood 13, which parts are fixed to the' machine casing. '14 is the spiral blade olf-a single vHight ribpairs of wheels spaped oqui-" hon conveyer supported at intervals from.

the core. l1 by radiating arms 1f. There is aslight clearance between' the periph eral edge of blade 14 and the inner surface of rotor 10, sufiicient to allow for a thin covering about the interior surface of the rotor of the material being acted upon.

1G is an arm fixed to core l1 by means of caps 1T, 17, and bolts 1S. 119 is a U-shapcd freine having a scraper blade O fixed thereto; this frame embraces between its arms the outer end. of arm 1G and a bolt 2l pivots the frame ou saulnrm 16. 'flieende of the two arms of U-shaped franielltare'bent to form pockets which are loaded with lead 22, to give counterbalancing weight at that end ofthe framesuiiicient to tilt Vthe blade 2() upward with its edge yieldingly in contact' with the inner surfaceof rotor l0. lVith the rotor turning against the edge of the:4

' scraper blade (as shown inFig. 2), thelatl ter scrapes from that portion of the interior surface of the rotor which it contacts any material carried by. said surface, such loos- Aened material dropping down to the bottom of the rotor and being thereby whirled, along with the mainfbody of the material,

. againstthe conveyer blade 14, and thus-advanced toward theldischarge' end of the v l whirled-about Withithe'roton' i v of these Scrapers, one'fin each end of the i i 1 rotorfi'lheir blades do notscrapethe entire inner surface of the' perforated 'Wall of. the

rotor',v leaving portions thereof imscrz'ipedto 'afford aV frictional contact-Withandgrip" ;upon the main bodyofthe 'material to bel Figs. 5 tofv 8, inclusi-ve, illustrate end a@ vdefle'cting' plat`e` setgon a `bi obliquely Wit-h relation "-,to'jthe'axiso the slightly 'clearngb'ut Conforming tothe curl Rotation of thev rotor-.25 (inthedirection 40, f- .being acted upon against the1face32pf 'the' er the arrowzlig: 6) ferries .the mater-iai plate 3 1, thusadvancing said' material withfin the rotor toward the discharge end o f the jlatter." Each plate'- 31 thus constitutes effect' a'section of a conyeyer., At 'the outer end -of each arin 30,A there aretwo oppo sitely projecting pivot studs and 3 6. The

stud 36 on .one"arr`n andthe stud 35 on the next arm engage sockets of a ivotal scraper '37, there being a succession o these Scrapers v thus positioned between the arms.. tEach;

4 scraper has a tail piece 38 Whichis'weight ed to counterbalance the scraper'part, which' is-on the other side of the axis ofthe pivots, i -thus holding the scraping ledge yieldingly in engagenient Withfthe interior surface of vthe rotor. The ,tail-piece has an ear 39 and -adefiecting surface 40 oblique toA the axis of the rotor.l With the rotor turning in the dircctionpf the arrow, Fig. 6, each scraper .37* removes' vfrom a portionof the interior surface of' the rotor any material carried fthe'rcby, and such dislodged Amaterial drops or is thrown against the inclined surface 4Q,

l and thereby deiiectedland advanced toward. the discharge end of the rotor. -With the' -scrapers 37 and their deflecting surfaces 40 'thus positioned-ineffect between adjacent deilecting plates 31, means are provided for advancing or conveying all material inthe rotor toward the discharge end of the latter.` Between adjacent Scrapers there-are main body of the'lmaterial suicient to cause the same' to be whirled about with the rotor. That I claim' is :-A

l.' In a machine of thecharacter described, the combination With a rotor, f' of one or more Scrapers within the rotor, and

gagement, with rotor.4 Y

ScrapersV Within the rotor and. yieldingly engaging the interi'or surface thereof, and c011- 'chargeendv -1 3." 'In :aj machine of the characterv described, the combinationfvvith a perforated lrotor, ef one or" more'scrapers pivotal'ly sup'- ported.Withinv the rotor, and means turnlng said Scrapers on their 'pivots to apply their v"edges into yielding contact" With the inner supported 'Within the'rotor, and counter- :balancing Weight holding each scraper With its edge in' yielding A(/:ontact with the inner 'surface'of the rotor.

5. In vmachine of the, character described,v the combination 'with a p erforated rotor., of a 'succession of Scrapers pivotally Supported Within' therotor, each scraper rotor, andmeansholdingsaid Scrapersin face of the rotor.vr A A 6.,In la machinelof rotor, of a, core' extending' longitudinally scrapers-pivotally `supported onsaid arms with their edges yielding contact with "the inner's'urface of the rotor.

7..In a machineA of -the :character derotor, of a -core extending longitudinally bands of the interior surface of 'the rotor not contacted by the scraping edges. These unscraped portions f the surface aordf' frictionalv contact with and grip' upon the 2. In vainachine ofz the character de-. scribed, the combination with a perforated y rotor adapted to receive at one end and ,to i ldeliver.ffroinitsv other end, one or more 4.. In ja' machinejfofthe v.character described, the combination with a perforated 'f rotor,v of'one or more- Scrapers pivotally havingl a" deecting. surface 'for i adiancing A material toward 'the discharge -end of the ftherein, armsradiating'from vsaid core, and

scribed, the combina'tion-`withl va perforatedtherein, arms 'radiating from said core,v

means holding said 'Scrapers in 'yielding enl the interior surface of thev veyer--meansfor advancing material through the vr Ot' 5 1j from its intake end to vits disyielding engagement with the inteajior'surthef character de- 'iA scribed, the combination with a perforated Scrapers pivotally supported on said-zinns with their edges in yielding `contactV with the inner surface of the rotor, other arms radiating from said core, and conveyer means supported by said other arms and adapted to advance material toward the dis- Y.

charge end of therotor.

Emna'r H. Pense, C. Sfmw'Am.' LEE. 

